IMPORTANT: The Cloud Dataflow pricing model has changed, effective January 9, 2017. Dataflow jobs are billed according to the new Cloud Dataflow pricing model. Prior to January 9, Dataflow jobs were billed according to the previous Cloud Dataflow pricing model.
IMPORTANT: The Dataflow SDKs are transitioning to be based on Apache Beam (see announcement). Throughout the site you will find documentation for both the original Dataflow SDK 1.x for Java and beta releases of the Apache Beam-based SDKs: the Dataflow SDK 2.x for Java and the Dataflow SDK for Python.
Cloud Dataflow is a unified programming model and a managed service for developing and executing a wide variety of data processing patterns. Dataflow includes SDKs for defining data processing workflows, and a Cloud Platform managed service to run those workflows on Google Cloud Platform resources such as Compute Engine, BigQuery, and more.